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Vintage Tape (Audio), Cassette, Wire and Magnetic Disc Recorders and Players Open-reel tape recorders, cassette recorders, 8-track players etc.

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Old 3rd Jun 2005, 6:39 pm   #1
dazzlevision
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Default Aiwa AD-6350 cassette deck - service manual wanted

Hello.

I require a service manual for the Aiwa AD-6350 cassette deck (late 1970s), which I would like to fix, as it seems too good to scrap!

Can anyone sell me (or copy) the manufacturer's service manual, please?

Naturally, all costs will be re-imbursed.

Hoping someone can help.

Many thanks,

Dazzlevision
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Old 3rd Jun 2005, 8:29 pm   #2
Nickthedentist
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Default Re: Aiwa AD-6350 cassette deck - service manual wanted

Sorry, can't help with manual.

But what's the problem with the deck? It's possible to mend a suprising number of cassette deck electronic faults without a diagram
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Old 4th Jun 2005, 12:33 am   #3
Andrew_Keith
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Default Re: Aiwa AD-6350 cassette deck - service manual wanted

Agree with Nick on this one , I would expect most faults on a deck of this age would be down to Noisy or worn record/playback changeover switching. Does the machine sometimes motorboat or the V.U meters fully deflect?. You can recognise these as two long banks of switching operated by the record key.
Gentle movement of the switch actuators should show up any problems. However you dont say whether the problem is mechanical or electrical.

Good luck.
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Old 4th Jun 2005, 10:46 am   #4
Nickthedentist
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Default Re: Aiwa AD-6350 cassette deck - service manual wanted

Andrew's absolutely right.

Another useful tricks with stereo equipment is to compare the voltages and signals in one channel with those in the other, to see where in the circuit the fault crops up.

Nick.
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Old 4th Jun 2005, 12:21 pm   #5
reel-to-reel-man
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Default Re: Aiwa AD-6350 cassette deck - service manual wanted

It would be a good idea then to buy some contact cleaner

http://cpc.farnell.com/jsp/endecaSea...&Ntk=gensearch

Very useful stuff but careful not to get it on the belts as some of them have a lubricating oil in them

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Old 4th Jun 2005, 6:25 pm   #6
dazzlevision
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Default Re: Aiwa AD-6350 cassette deck - service manual wanted

Hello All.

Thanks for the comments so far.

I have already fixed the excessive take up clutch torque, inadequate pinchroller pressure and slack belts. In addition, the LH channel Dolby IC was u/s, giving no rec or play.

I now find that the LH channel records low (plays back low on this deck and other machines), even though the record levels are set correctly.

Maybe I need to adjust a preset due to the IC change? I had to wind up the LH Dolby playback level pot after replacing the IC - using a Dolby level test tape.

I have come across dirty rec/play slider switches in the past but these seem to be OK.

Any further advice greatly appreciated.

Regards,

Dazzlevision
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Old 4th Jun 2005, 6:37 pm   #7
Nickthedentist
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Default Re: Aiwa AD-6350 cassette deck - service manual wanted

Quote:
Originally Posted by dazzlevision
Hello All.
Maybe I need to adjust a preset due to the IC change? I had to wind up the LH Dolby playback level pot after replacing the IC - using a Dolby level test tape.
I think you may have hit the nail on the head there
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